 30, the mid-30s, before the 1960s, it wasn't commonplace before the 60s. And think about what life would be like. That's just one of many. Remember where you got your information. You got your information if you were fortunate to have an encyclopedia set in your home. That was a door-to-door encyclopedia salesman. Think about that. That's where you got. And every now and then, they would send an appendix. Every year, they would send a book that just updated stuff that was wrong in the first set of encyclopedias.